Malicious PDF — malware analysis report

Static analysis result for SHA-256 183807ed52d971e7…

MALICIOUS

PDF

75.7 KB Created: 2021-05-22 09:32:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-20
MD5: b55cc28ef41271650a2cc9ed6102ea57 SHA-1: dddea2ef0004d9230684ad59c73c6da10daa7398 SHA-256: 183807ed52d971e73881399d5d6f404ca8888547ef8009432017f38925169bab
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Travel-support phone-number stuffing scam critical SE_TRAVEL_SUPPORT_PHONE_SCAM
    Document repeats phone numbers in airline/travel/refund/support language, often across multiple regional phrasings. This matches SEO/support-scam PDFs that impersonate airlines or travel brands and route users to attacker-controlled call centers rather than a normal travel document.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://static.s123-cdn-static.com/uploads/4369768/normal_5fec9065bbad2.pdf In PDF document text
    • https://s3.amazonaws.com/bajuse/50th_golden_wedding_anniversary_invitation_template.pdfIn PDF document text
    • https://s3.amazonaws.com/kudefem/48380812691.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405687/normal_606431a66e048.pdfIn PDF document text
    • https://s3.amazonaws.com/dowadotiju/39749630608.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381748/normal_5fd5f22625baa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483873/normal_5ff4de625b2ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487423/normal_600ce12c90892.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391327/normal_605026379c875.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419820/normal_5ffd0cf8d0892.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/36366400661.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448357/normal_5ff6a7b75c1db.pdfIn PDF document text
    • https://s3.amazonaws.com/savifin/pobijurarelikewa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369774/normal_5ff475a8a3392.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370525/normal_601a30ac2d67a.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/13288717276.pdfIn PDF document text
    • https://riguniliwegab.weebly.com/uploads/1/3/5/3/135342973/vukipagenokubipu.pdfIn PDF document text
    • https://mufejuraziga.weebly.com/uploads/1/3/0/8/130814984/lijaw.pdfIn PDF document text
    • https://zemijawa.weebly.com/uploads/1/3/1/0/131070152/777842.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000eb98.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000eb98.bin)
    • http://feedproxy.google.com/~r/wb/ENAH/~3/B9wesDdUo4k/wb?keyword=what%20is%20global%20developmental%20delay%20in%20adultsPDF link annotation
    • https://uploads.strikinglycdn.com/files/366bcb58-4894-4ce0-9fb1-eec01126d84b/mainstays_oversized_zero_gravity_swing_assembly_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f241132-c310-4138-9eea-cada9ea9deb5/9514946039.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17a5710b-5b0a-479c-b25a-544b2b867bd4/64038740963.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3959eb3-51af-4b4a-bcf0-ca4aa0894bfc/67844734537.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn extracted file (font_00_sfnt_off0000eb98.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB98 5592 bytes
SHA-256: e7fe7b51d9f33a02e461750e5eb8645468126b94c51aad21ccdd5d041c5cc282
font_01_sfnt_off0000fe8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE8C 10416 bytes
SHA-256: 3e0c07c09eb48fe2829fa8db74e36debf572a424d7be2159e3288c755ab4bf61